INFORMATION PROCESSOR, DATA TRANSMISSION DEVICE, AND DATA TRANSFER METHOD OF THE DATA TRANSMISSION DEVICE

摘要

A selection-signal generating circuit (106) in an LSI #1_(100) being a transmission-side LSI, when a transmission error is detected on an A-side signal line (301) (B-side signal line (302)) and degeneration control is performed thereon, instructs a selector (103) (selector (105)) to select an input from an ECC generator (102b) (ECC generator (104b)) in order to transmit data and ECC data for this data to be transmitted via the B-side signal line (302) (A-side signal line (301)), via the A-side signal line (301) (B-side signal line (302)). In this manner, the degenerated signal line is used to transmit the ECC data for transmission data to be transmitted via a signal line which is not degenerated, which allows error detection and error correction of the transmission data, and thus, reliability of the transmission data is improved and a transmission channel is prevented thereafter from being further degenerated.